/*   Copyright  2009
 *  @Author
 *  Richard Changde Yin            e-mail yinchangde@hotmail.com
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; version 2 of the License.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

/*
*@filename:   field/int64_t.h
*/

#ifndef _SERVER_FIELD_INT_64_T
#define _SERVER_FIELD_INT_64_T

#include <field/num.h>

class Field_int64_t :public Field_num {
public:

  using Field::val_int;
  using Field::val_str;
  using Field::cmp;
  using Field::store;
  using Field::pack;
  using Field::unpack;

  Field_int64_t(unsigned char *ptr_arg, uint32_t len_arg,
                unsigned char *null_ptr_arg,
                unsigned char null_bit_arg,
                enum utype unireg_check_arg,
                const char *field_name_arg,
                bool zero_arg,
                bool unsigned_arg)
               :Field_num(ptr_arg, len_arg,
                          null_ptr_arg, null_bit_arg,
                          unireg_check_arg, field_name_arg,
                          0, zero_arg,unsigned_arg)
               {}
  Field_int64_t(uint32_t len_arg,bool maybe_null_arg,
                const char *field_name_arg,
                bool unsigned_arg)
               :Field_num((unsigned char*) 0, len_arg,
               maybe_null_arg ? (unsigned char*) "": 0,0,
               NONE, field_name_arg,0,0,unsigned_arg)
               {}
  inline enum Item_result result_type () const { return INT_RESULT; }
  enum_field_types type() const { return COLLAPSAR_TYPE_LONGLONG;}
  inline enum ha_base_keytype key_type() const
    { return unsigned_flag ? HA_KEYTYPE_ULONGLONG : HA_KEYTYPE_LONGLONG; }
  int store(const char *to,uint32_t length, const CHARSET_INFO * const charset);
  int store(double nr);
  int store(int64_t nr, bool unsigned_val);

  inline int reset(void)
  {
    ptr[0]=ptr[1]=ptr[2]=ptr[3]=ptr[4]=ptr[5]=ptr[6]=ptr[7]=0;
    return 0;
  }
  double val_real(void);
  int64_t val_int(void);
  String *val_str(String*,String *);
  int cmp(const unsigned char *,const unsigned char *);
  void sort_string(unsigned char *buff,uint32_t length);
  uint32_t pack_length() const { return 8; }
  void sql_type(String &str) const;
  bool can_be_compared_as_int64_t() const { return true; }
  uint32_t max_display_length() { return 20; }
  virtual unsigned char *pack(unsigned char* to, const unsigned char *from,
                              uint32_t max_length,
                              bool low_byte_first);

  virtual const unsigned char *unpack(unsigned char* to, const unsigned char *from,
                              uint32_t param_data,
                              bool low_byte_first);

};

#endif  //_SERVER_FIELD_INT_64_T
